a while back i sold my 99 v6 for a work truck. the times come and i no longer need the truck so i began looking for another mustang. i found one and im going to be trading straight up within a week. heres the list i have so far.
BBK CAI
Tunable MAF
Different computers. no clue what but they showed me the origonals
Edelbrock upper and lower plenum
65MM Throttle
stock heads ported with 3angle valve job and shaved 10k. compression up to 9.5-1
flat top pistons complete forged bottom end. lunati cam. unsure of specs but notable lope.
BBK shorty headers and SLP loudmouth exhaust. lx trans w stage 2clutch. 20k on total rebuild. 98k on body.
2" lowering springs
all new bushings ect. subframe connectors.

thats not a super amount of mods, if anything probably just injectors and maybe not even that depending on what they have stock. I would estimate you are at 215/300 stock so you probably picked up 30rwhp to 40rwhp depending on tune...